Machine for facilitating the connecting of temples with lenses



2,305,718 MACHINE FOR FACILITATING THE CONNECTINGdF TEMPLES WITH LENSESDec. 22, 1942. c s; LAN'MAN Filed April 15. 1940 Fig.1.

(Ittorneg 5 Patented Dec. 22, 1942 MACHINE FOR FACILITATING THE CON-NECTING 0F TEMPLES WITH LENSES Charles SQLa-nman, Columbus, OhioApplication April 15, 1940, Serial No. 329,300

3 Claims.

This invention relates more particularly to means or mechanism for usein rapidly, effectively and economically securing the bridge and/ortemples of eye glasses to the lenses. The invention is especially usefulwhere the lenses are of the rimless variety and are perforated toreceive the bridge and temple connecting members. The temples andbridges and perforated lenses are commonly supplied by manufacturers toWholesaling. opticians and such opti-cians assemble the parts with theaid of ordinary hand tools and .as a consequence there is muchinaccuracy in the work and breakage and loss of glass and parts.

The principal object of the present invention is to'provlde theassembling optician with a machine or means whereby the work referred tois not only greatly improved, facilitated and expedited. but the lossreferred to greatly reduced.

Other objects will appear from the disclosure.

The invention is embodied in the example herein shown and describedthefeatures-ofnovelty being pointed out in the claims.

In the accompanying drawing- Figure l is a view of the machine in sideelevation with a portion'of the left hand housing broken out to showsome interior details.

Fig. 2 is a combined top plan and horizontal section, the section beingon the line II-II Fig. 1 looking down.

Fig. 3 is a detail sectional view taken on a vertical plane indicated bythe line III-III Fig. 2 looking toward the right.

Fig. 4 is a sectional detail view illustrating conventional form ofmeans for connecting an eye glass temple with a lens.

In the views, 5 designates a base on which the parts of the machine aremounted. 6 designates a housing secured on one end of the base. saidhousing containing a small conventional electric motor provided with ausual plug-in member I for supplying the operating electrical circuit tothe motor. A switch 8 is provided on the base for controlling theopening and closing of the motor operating circuit.

One end of the rotatable shaft 40 of the motor is provided with afrusto-conical friction clutch ll, preferably of leather, suitablysecured to the shaft so as to be rotated with the shaft when the latteris driven.

On the opposite end of the base 5 is secured a second housing I2 inwhich is mounted a tool holding shaft l3 extending horizontally and atright angles to the axis of the power driven its opposite end portionsin a fixed bushing 14 and in a slidable bushing l5. Near the middle ofthe said shaft I3 is secured by set screw a spool shaped clutch memberIt the innersides I of the rims of which constitute friction clutchmembers normally straddling but which in intermediate or neutralposition are slightly spaced from the frusto-conical clutch H. Theslidin bushing or sleeve I5 is confined on the tool shaft between saidspool-shaped friction member and a collar l1 secured by a set screw onthe adjacent projecting end of the tool shaft so that by suitablyshiftingsaid slidable sleeve with suitable pressure the spool can bebrought into frictional engagement at either side of the frusto conicalfriction member to rotate the tool shaft in the direction desired.

A tool for the desired work is shown at 18; it

being removably fixed by a set screw on a suitable chuck l9 at theworking end of the shaft I 3. Said tool commonly has a broach orpyramidal reaming end and a threaded shank portion to fit in and enterthe threaded side of the lens engaging strap (see Fig. 4) to clean upthe said e thread.

The means for shifting the slidable sleeve and the tool holder and itstool includes a handle 20 having a shaft 2| journaled to rock in thehousing, said shaft having secured thereto a finger 22, the free end ofwhich engages a notch in the lower side of the slidable bushing l5 asshown in Figs. 1 and 3. A fibre washer is shown at each end of the saidslidable bushing 15.

In connecting the strap of a temple or nose piece it is usually foundthat the prepared holes in the metal parts and the glass are notperfect- 1y alined. It is therefore necessary to retap the assembledparts before the fastening screw can be properly inserted. It has beenthe universal custom in the art to use a tool mounted in a' small holderand held in the hand to carefully do the retapping. With my machine thoperation is as follows: The parts to be treated are held in the hand ofthe workman and are pressed onto the tool of the machine. Thislongitudinal pressure engages the tool driving members thereby causesthe tapping and reaming of the preformed holes of the metal parts. Inthis operation it sometimes happens that the tool becomes wedged in theholes by reason of unalinement of such holes and in such cases rotationof the tool is stopped and without my invention the glass of the lens isfrequently broken. In my machine the operation, in such event, is this:The parts shaft. Said tool holding shaft is journaled at 55 beingtreated are Withdrawn slightly and the roor irregularities of theopenings in both the lens and the metal of the strap of the temple sothat the screw securing said strap to the lens can be easily andproperly applied.

As the rotary motion of the tool is quite rapid with the electric motor,it is important that the heads of the spool shaped member be madethinand of light weight to reduce momentum due to,

prolonged rotations of the tool holder and tool pending the change fromworking'position' to,

withdrawing operation of the tool. Usually it is not necessary to employthe handle 20 in operat Y on said tool shaft between said stop and thesaid motion reversing means and a manually controlled means eng-agingsaid bushing to shift said motion reversing element.

2. A machine for use in reformingthe preformed holes in the lenses andmetal parts of rimless eye glasses for perfecting the connection of thetemples and frames and while such a glass and said metal parts are heldin a hand of the workman, said machine including a suitable supporthaving journaled thereon a power shaft, a substantially horizontallypositioned rotatable shaft having secured on one end thereof a combinedreaming andthread-tapping tool, and a stop on its other end, amotionreversing means on said power and tool holding shafts whereby thedirection of rotation of said tool holding shaft and j the tool thereoncan be reversed by longitudinal ing the tool because the axialpressureof the work against the tool in eitherrdirection is sum-- cientto set it in motion vfor the operation but said handle is useful if thetool sticks or takes too big a bite.

feature.

The forms of the parts can be changed-with out departing from the gist.of the invention as claimed.

What I claim is:

1; A machinefor use in reforming the preformed holes in the lenses andmetal parts of rimlesseye glasses for perfecting theconnection of thetemples and frames and While such a glass and said, metal parts are heldin a hand of the workman, said machine including asuitable supporthaving journaled thereon a power, shaft, a substantially horizontallypositioned rotatable shaft having secured on one end thereof a com,-

bined reaming and thread-tapping tool, and ;a stop on its other end, amotion reversing means on said power and tool holding shaf-tswhereby thedirection, of rotation of said tool holding shaft,

and the tool thereon can be reversed by longitudinal movement of; saidtool holding shaft, said means including a bushinglongitudinallyslidable- Such manual control vof the rotation of the toolis a valuable and time-saving,

movement of said tool holding shaft, said means including a bushinglongitudinally slidable on said tool holding shaft between saidstop andthe said motion reversing means, a, fibre Washer on said shaft adjacenteach end of said bushing, and

amanually controlled means engaging saidbushing to shift said motionreversing element.

3. A machine for use in reforming the preformed holes in the lens andmetal par-ts of a rimless eye glass for perfecting the connection ofsaid metal partscwith the lens and while such,

a lens and said metal parts are held in the hand of the workman, saidmachine including a suitable support having journaled thereon a vpowershaft, a substantially horizontally positioned rotatable shaft driven bysaid power shaft and have ing secured on one end thereof a combinedreaming and thread-tapping tool, motion reversing means on said powerand tool holding shafts whereby the =direction of rotationof said toolholding shaft and the, tool therein can be reversed by longitudinalmovement of said tool holding shaft by manual pressure on the articletreated, and manually controllable meansjfor longi tudinally shiftingsaid tool holding shaft independently of the pressure of the hand on thearticle treated.

CHARLES S. LANMAN,

